♻️ Restructure: Move Astro to repository root

BREAKING CHANGE: Astro project is now at repository root
- Removed dealplustech-astro subdirectory
- Moved all Astro files to root
- Updated PostCSS config to .cjs
- Removed old Next.js files

✅ 11 pages built successfully
✅ Cookie consent banner included
✅ Privacy/Terms links in footer
✅ Ready for Easypanel deployment (no root dir needed)

Migration path:
- Old structure: /dealplustech-astro/
- New structure: / (root)

dealplustech-astro/node_modules/@shikijs/engine-javascript/dist/engine-compile.mjs

@@ -1,52 +0,0 @@
-import { toRegExp } from 'oniguruma-to-es';
-import { J as JavaScriptScanner } from './shared/engine-javascript.hzpS1_41.mjs';
-
-function defaultJavaScriptRegexConstructor(pattern, options) {
-  return toRegExp(
-    pattern,
-    {
-      global: true,
-      hasIndices: true,
-      // This has no benefit for the standard JS engine, but it avoids a perf penalty for
-      // precompiled grammars when constructing extremely long patterns that aren't always used
-      lazyCompileLength: 3e3,
-      rules: {
-        // Needed since TextMate grammars merge backrefs across patterns
-        allowOrphanBackrefs: true,
-        // Improves search performance for generated regexes
-        asciiWordBoundaries: true,
-        // Follow `vscode-oniguruma` which enables this Oniguruma option by default
-        captureGroup: true,
-        // Oniguruma uses depth limit `20`; lowered here to keep regexes shorter and maybe
-        // sometimes faster, but can be increased if issues reported due to low limit
-        recursionLimit: 5,
-        // Oniguruma option for `^`->`\A`, `$`->`\Z`; improves search performance without any
-        // change in meaning since TM grammars search line by line
-        singleline: true
-      },
-      ...options
-    }
-  );
-}
-function createJavaScriptRegexEngine(options = {}) {
-  const _options = Object.assign(
-    {
-      target: "auto",
-      cache: /* @__PURE__ */ new Map()
-    },
-    options
-  );
-  _options.regexConstructor ||= (pattern) => defaultJavaScriptRegexConstructor(pattern, { target: _options.target });
-  return {
-    createScanner(patterns) {
-      return new JavaScriptScanner(patterns, _options);
-    },
-    createString(s) {
-      return {
-        content: s
-      };
-    }
-  };
-}
-
-export { createJavaScriptRegexEngine, defaultJavaScriptRegexConstructor };